* Add --help-usage option to display bjam options.

* Add the missing recursive display of docs when specifying --help-enable-detailed. Using it with --help-all will produce most of the available docs at once.


[SVN r18290]

tools/build

@@ -1 +1 @@
-Subproject commit 8a53f873fa5e9578c6ab2f38e78cff183694a919
+Subproject commit 6d0b6cf8df5e193e0839ac56da6ab9e0e6775af8